Tadashi Agi is the penname used by the best-selling brother and sister duo Shin and Yuko Kibayashi. Veteran writers the Kibayashi's debuted on the Japanese scene with the award-winning and best-selling comic series Kindaichi's Case Files (published in English by Tokyopop). Agi's next hit was the series GetBackers , which would cement the pair as Japan's most innovative thriller mystery writers of the early part of the new century.GetBackers success would extend across the globe becoming a strong seller in the US, selling approximately 200,000 units. Lifetime Agi's works would amass to millions of units in Japan and nearly 300,000 units sold in the US. Yuko and Shin Kibayashi are also well regarded wine enthusists who were also voted one of Decanter magazine's 50 most influencial people in the wine industry in 2009. They have been featured in interviews with the New York Times, CNN, and Wine Aficionado regarding global wine trends. Shu Okimoto is a veteran comic illustrator and book jacket designer.